The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 2005
Filed:
Jan. 24, 2000
Masaru Yoshitake, Kanagawa, JP;
Yasuhiro Kunisa, Kanagawa, JP;
Eiji Endoh, Kanagawa, JP;
Eiji Yanagisawa, Kanagawa, JP;
Masaru Yoshitake, Kanagawa, JP;
Yasuhiro Kunisa, Kanagawa, JP;
Eiji Endoh, Kanagawa, JP;
Eiji Yanagisawa, Kanagawa, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
A polymer electrolyte fuel cell comprising a polymer electrolyte made of an ion exchange membrane, catalyst layers disposed on both sides thereof and current collectors disposed on the outer sides thereof, wherein a solvent-soluble fluorine-containing polymer (preferably a polymer having a fluorine-containing aliphatic ring structure) having substantially no ion exchange groups, is incorporated in the current collectors. By the above construction, the current collectors can have a high water repellency for a long period of time, and the polymer electrolyte fuel cell can operate at a high output density constantly over a long period of time.